F28D 2021/0026
For combustion engines
Official title: {for combustion engines, e.g. for gas turbines or for Stirling engines}
F28D2021/0026 (For combustion engines) appears on 271 US grants and 350 published applications in this corpus.
Search patents in F28D- Granted patents
- 271
- Published applications
- 350
- Assignees
- 101
- Inventors
- 605
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 2 | 6 |
| 2013 | 3 | 1 |
| 2014 | 1 | 7 |
| 2015 | 3 | 4 |
| 2016 | 3 | 20 |
| 2017 | 6 | 35 |
| 2018 | 9 | 33 |
| 2019 | 38 | 33 |
| 2020 | 30 | 39 |
| 2021 | 34 | 33 |
| 2022 | 38 | 37 |
| 2023 | 34 | 36 |
| 2024 | 27 | 28 |
| 2025 | 30 | 20 |
| 2026 | 10 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Heat exchanger density ion injection and reclaim system17 Sep 2026US 2026/0275913 A1Rtx Corporation
- Heat exchanger for gas turbine engines13 Aug 2026US 2026/0235074 A1GE Avio S. r. l.
- Aircraft Heat Exchanger Panel Array Interconnection9 Jul 2026US 2026/0194009 A1Rtx Corporation
- Oil cooler2 Jul 2026US 2026/0185781 A1Mahle Filter Systems Japan Corporation
- Heat exchanger with waveform channel profile7 May 2026US 2026/0126252 A1Aerojet Rocketdyne, Inc.
Most cited
By later US patents
- Cooling system76US 10,260,419 B2General Electric Company · 2019
- Methods of cooling a fluid using an annular heat exchanger52US 10,184,400 B2General Electric Company · 2019
- Heat exchanger for cooling a gas turbine50US 5,269,133 AGeneral Electric Company · 1993
- Heat exchanger for embedded engine applications36US 10,126,062 B2General Electric Company · 2018
- Modular annular heat exchanger33US 10,443,436 B2General Electric Company · 2019